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package com.taobao.android.apatch;

import com.google.common.collect.Lists;
import com.google.common.collect.Sets;
import com.taobao.android.APatchTool;
import com.taobao.android.PatchMethodTool;
import com.taobao.android.apatch.utils.Formater;
import com.taobao.android.apatch.utils.SmaliDiffUtils;
import com.taobao.android.apatch.utils.TypeGenUtil;
import com.taobao.android.differ.dex.DexDiffer;
import com.taobao.android.differ.dex.PatchException;
import com.taobao.android.object.DexDiffInfo;
import org.apache.commons.io.FileUtils;
import org.jf.dexlib2.dexbacked.DexBackedAnnotation;
import org.jf.dexlib2.dexbacked.DexBackedAnnotationElement;
import org.jf.dexlib2.dexbacked.DexBackedClassDef;
import org.jf.dexlib2.dexbacked.DexBackedMethod;
import org.jf.dexlib2.dexbacked.value.DexBackedAnnotationEncodedValue;
import org.jf.dexlib2.dexbacked.value.DexBackedArrayEncodedValue;
import org.jf.dexlib2.dexbacked.value.DexBackedTypeEncodedValue;
import org.jf.dexlib2.iface.Annotation;
import org.jf.dexlib2.iface.AnnotationElement;
import org.jf.dexlib2.iface.value.EncodedValue;
import org.jf.dexlib2.iface.value.TypeEncodedValue;
import org.jf.util.ClassFileNameHandler;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.sql.Date;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.jar.Attributes;
import java.util.jar.Manifest;


/**
 * @author sanping.li@alipay.com
 */
public class ApkPatch extends com.taobao.android.apatch.Build {

    private List<File> baseFiles = Lists.newArrayList();
    private List<File> newFiles = Lists.newArrayList();

    private File diffFile;
    private File diffJsonFile;
    private Set<String> classes;

    public static String currentClassType;

    // 设置白名单文件路径
    public void setPath(String filterPath) {
        this.filterPath = filterPath;
    }

    public ApkPatch(File baseFile, File newFile, String name, File out) {
        super(name, out);
        this.baseFiles.add(baseFile);
        this.newFiles.add(newFile);

    }

    public ApkPatch(List<File> baseFiles, List<File> newFiles, String name, File out) {
        super(name, out);
        this.baseFiles = baseFiles;
        this.newFiles = newFiles;

    }

    public void setDiffFile(File diffFile) {
        this.diffFile = diffFile;
    }

    public void setDiffJsonFile(File diffJsonFile) {
        this.diffJsonFile = diffJsonFile;
    }

    public File doPatch() throws PatchException {
        try {
            File aptchFolder = new File(out, name);
            File smaliDir = new File(aptchFolder, "smali");
            if (!smaliDir.exists()) {
                smaliDir.mkdirs();
            }
            try {
                FileUtils.cleanDirectory(smaliDir);
            } catch (IOException e) {
                throw new RuntimeException(e);
            }

            File dexFile = new File(aptchFolder, "diff.dex");
            if (dexFile.exists() && !dexFile.delete()) {
                throw new RuntimeException("diff.dex can't be removed.");
            }
            File outFile = new File(aptchFolder, "diff" + SUFFIX);
            if (outFile.exists() && !outFile.delete()) {
                throw new RuntimeException("diff" + SUFFIX + " can't be removed.");
            }

            currentTimeStamp = System.currentTimeMillis();
            DexDiffer dexDiffer = new DexDiffer(baseFiles, newFiles, 19);
            // 创建白名单过滤类
            if ((this.filterPath != null) && !(this.filterPath.equals(""))) {
                dexDiffer.createFilter(this.filterPath);
            }
            //diff
            DexDiffInfo info = dexDiffer.doDiff();
            dexDiffer.setDexDiffFilter(new AndFixFilterImpl(info));

            //diffFilter
            dexDiffer.dexFilter();

            info.update();
            //写json
            if (null != diffFile && null != diffJsonFile) {
                info.writeToFile(name, diffFile, diffJsonFile);
            }
            //生成dex
            classes = SmaliDiffUtils.buildCode(smaliDir, dexFile, info);
            if (null == classes || classes.size() <= 0) {
                return null;
            }

            //是否修改dex
            if (APatchTool.debug) {
                PatchMethodTool.modifyMethod(dexFile.getAbsolutePath(), dexFile.getAbsolutePath(), true);
            }

            File smaliDir2 = new File(aptchFolder, "smali2");
            if (!smaliDir2.exists()) {
                smaliDir2.mkdirs();
            }
            try {
                FileUtils.cleanDirectory(smaliDir2);
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
            prepareClasses = buildPrepareClass(smaliDir2, newFiles, info);
            DexDiffInfo.release();
            build(outFile, dexFile);
            File file = release(aptchFolder, dexFile, outFile);
            release();
            return file;
        } catch (Exception e) {
            throw new PatchException(e);
        }
    }


    private static Set<String> buildPrepareClass(File smaliDir, List<File> newFiles,
                                                 DexDiffInfo info) throws PatchException {
        Set<DexBackedClassDef> classes = Sets.newHashSet();
        classes = SmaliDiffUtils.scanClasses(smaliDir, newFiles);
        ArrayList<String> methods = new ArrayList<String>();
        {
            Set<DexBackedMethod> tempSet = info.getModifiedMethods();
            for (DexBackedMethod methodRef : tempSet) {
                String template = methodRef.getDefiningClass() + "->" + methodRef.getName();
                methods.add(template);
                System.out.println("template: " + template);
                if (superClasses.containsKey(methodRef.getDefiningClass())) {
                    ArrayList<String> derivedClasses = superClasses.get(methodRef.getDefiningClass());
                    for (int i = 0; i < derivedClasses.size(); i++) {
                        template = derivedClasses.get(i) + "->" + methodRef.getName();
                        System.out.println("template: " + template);
                        methods.add(template);
                    }
                }
            }
        }

        Set<String> prepareClasses = new HashSet<String>();
        try {
            final ClassFileNameHandler inFileNameHandler = new ClassFileNameHandler(smaliDir, ".smali");
            for (DexBackedClassDef classDef : classes) {
                currentClassType = null;
                String className = TypeGenUtil.newType(classDef.getType());
                // baksmali.disassembleClass(classDef, outFileNameHandler, options);
                File smaliFile = inFileNameHandler.getUniqueFilenameForClass(className);
                if (!smaliFile.exists()){
                    continue;
                }
                //增加class注解到prepare
                getClassAnnotaionPrepareClasses(classDef,prepareClasses,info);

                BufferedReader br = new BufferedReader(new FileReader(smaliFile));
                String data = br.readLine();// 一次读入一行，直到读入null为文件结束
                while (data != null) {
                    boolean find = false;
                    for (String m : methods) {
                        if (data.contains(m)) {
                            find = true;
                            break;
                        }
                    }
                    if (find) {
                        prepareClasses.add(className.substring(1, className.length() - 1).replace('/', '.'));
                        System.out.println("prepare class: " + className);
                        break;
                    }
                    data = br.readLine(); // 接着读下一行
                }
                br.close();

            }
        } catch (Exception e) {
            throw new PatchException(e);
        }
        for (DexBackedMethod method:info.getModifiedMethods()) {
            prepareClasses.add(method.getDefiningClass().substring(1, method.getDefiningClass().length() - 1).replace("/", "."));
        }
        //增加modify的anatation到prepare
//        getMethodAnnotaionPrepareClasses(info,prepareClasses);
        return prepareClasses;
    }


    public static void getMethodAnnotaionPrepareClasses(DexDiffInfo dexDiffInfo, Set<String> prepareclasses){

        for (DexBackedMethod method:dexDiffInfo.getModifiedMethods()){
            Set<? extends Annotation>annotations = method.getAnnotations();
            if (annotations == null){
                continue;
            }
            for (Annotation annotation:annotations){
                String type = annotation.getType();
                if (type!= null&&type.startsWith("L")&&type.endsWith(";")){
                    prepareclasses.add(type.substring(1, type.length() - 1).replace('/', '.'));
                    System.out.println("prepare class: " + type);
                }
                Set<? extends AnnotationElement> elements = annotation.getElements();
                for (AnnotationElement dexBackedAnnotationElement:elements){
                    if (dexBackedAnnotationElement.getValue() instanceof DexBackedArrayEncodedValue){
                        List<? extends EncodedValue> values = ((DexBackedArrayEncodedValue) dexBackedAnnotationElement.getValue()).getValue();
                        for (EncodedValue encodedValue:values) {
                            if (encodedValue instanceof TypeEncodedValue) {
                                prepareclasses.add(((TypeEncodedValue) encodedValue).getValue().substring(1, ((TypeEncodedValue) encodedValue).getValue().length() - 1).replace('/', '.'));
                                System.out.println("prepare class: " + ((TypeEncodedValue) encodedValue).getValue());
                            }
                        }

                    }else if (dexBackedAnnotationElement.getValue() instanceof DexBackedTypeEncodedValue){
                        String value = ((DexBackedTypeEncodedValue) dexBackedAnnotationElement.getValue()).getValue();
                        prepareclasses.add(value.substring(1, value.length() - 1).replace('/', '.'));
                        System.out.println("prepare class: " + value);
                    }
                }
            }
        }

    }

    public static void getClassAnnotaionPrepareClasses(DexBackedClassDef classDef, Set<String> prepareclasses,DexDiffInfo dexDiffInfo){

        for (DexBackedClassDef modifyClasses:dexDiffInfo.getModifiedClasses()){
            if (classDef.getType().equals(modifyClasses.getType())){
                if (classDef.getAnnotations()!= null){
                    Set<? extends DexBackedAnnotation>annotations = classDef.getAnnotations();
                    for (DexBackedAnnotation annotation:annotations){
                        String type = annotation.getType();
                        if (type!= null&&type.startsWith("L")&&type.endsWith(";")){
                            prepareclasses.add(type.substring(1, type.length() - 1).replace('/', '.'));
                            System.out.println("prepare class: " + type);
                        }
                        Set<? extends DexBackedAnnotationElement> elements = annotation.getElements();
                        for (DexBackedAnnotationElement dexBackedAnnotationElement:elements){
                            if (dexBackedAnnotationElement.getValue() instanceof DexBackedArrayEncodedValue){
                                List<? extends EncodedValue> values = ((DexBackedArrayEncodedValue) dexBackedAnnotationElement.getValue()).getValue();
                                for (EncodedValue encodedValue:values) {
                                    if (encodedValue instanceof TypeEncodedValue) {
                                        prepareclasses.add(((TypeEncodedValue) encodedValue).getValue().substring(1, ((TypeEncodedValue) encodedValue).getValue().length() - 1).replace('/', '.'));
                                        System.out.println("prepare class: " + ((TypeEncodedValue) encodedValue).getValue());
                                    }
                                }

                            }else if (dexBackedAnnotationElement.getValue() instanceof DexBackedTypeEncodedValue){
                                String value = ((DexBackedTypeEncodedValue) dexBackedAnnotationElement.getValue()).getValue();
                                prepareclasses.add(value.substring(1, value.length() - 1).replace('/', '.'));
                                System.out.println("prepare class: " + value);
                            }else if (dexBackedAnnotationElement.getValue() instanceof DexBackedAnnotationEncodedValue){
                                String value = ((DexBackedAnnotationEncodedValue) dexBackedAnnotationElement.getValue()).getType();
                            }

                        }
                    }

                }
            }
        }

    }


    @SuppressWarnings("deprecation")
    protected Manifest getMeta() {
        Manifest manifest = new Manifest();
        Attributes main = manifest.getMainAttributes();
        main.putValue("Manifest-Version", "1.0");
        main.putValue("Created-By", "1.0 (ApkPatch)");
        main.putValue("Created-Time", new Date(System.currentTimeMillis()).toGMTString());
        main.putValue("From-File", baseFiles.get(0).getName());
        main.putValue("To-File", newFiles.get(0).getName());
        main.putValue("Patch-Name", name);
        main.putValue(name + "-Patch-Classes", Formater.dotStringList(classes));
        main.putValue(name + "-Prepare-Classes", Formater.dotStringList(prepareClasses));
        main.putValue(name + "-Used-Methods", Formater.dotStringList(usedMethods));
        main.putValue(name + "-Modified-Classes", Formater.dotStringList(modifiedClasses));
        main.putValue(name + "-Used-Classes", Formater.dotStringList(usedClasses));
        main.putValue(name + "-add-classes", Formater.dotStringList(addClasses));
        return manifest;
    }

    public static void main(String[] args) throws IOException, PatchException {


        String baseDir = "/Users/lilong/Downloads/tpatch/";
        File from = new File(baseDir + "classes.dex");
        File to = new File(baseDir + "classes1.dex");

        File out = new File(baseDir);
        // FileUtils.cleanDirectory(out);

        String keystore = "/Users/seker/programs/debugsign/seker.keystore";
        String password = "12345678";
        String alias = "seker.keystore";
        String entry = "12345678";
        String name = "main";
//        APatchTool.mappingFile = new File("/Users/lilong/Downloads/mapping.txt/target/proguard/full-mapping.txt");
        ApkPatch apkPatch = new ApkPatch(from, to, name, out);
        apkPatch.setDiffFile(new File(baseDir, "diff.txt"));
        StackTraceElement[] stackTraceElements = Thread.currentThread().getStackTrace();
        for (StackTraceElement stackTraceElement : stackTraceElements) {
            System.out.println(stackTraceElement.getClassName() + ":" + stackTraceElement.getMethodName());
        }
        apkPatch.doPatch();
    }
}
